The Boston is a comfortable, classic shoe with naturally soft, light and breathable materials. The Comfort Fibre System increases air circulation for the perfect inner climate. It also features a direct injected, one-component rubber-like PU outsole with shock point, a highly breathable and moisture-absorbent lining, and a light and flexible sole with added shock absorption. It also has a removable, leather-covered inlay sole with 3mm ECCO Comfort Fibre System, textile lining, and the uppers are made of full-grain leather.